Switched to shellscript

(less overhead overall)

shellmath.sh

@@ -0,0 +1,10 @@
+# Shellmath v2
+# Works in most bourne-type shells.
+# Partially reimplemented in shell script due to less overhead.
+
+function add { echo $(($1+$2)); }
+function sub { echo $(($1-$2)); }
+function mul { echo $(($1*$2)); }
+function div { echo $(($1/$2)); }
+function mdl { echo $(($1%$2)); }
+function randr { echo $(($1+$RANDOM%$2)); }